/* ═══════════════════════════════════════════════════
   KREDITS PLATFORM — Shared Design System
   Used by: Hub, Settings, Markbook
   ═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Syne:wght@700;800&family=DM+Sans:wght@400;500;600&display=swap');

:root {
  /* Colours */
  --bg:         #f4f6fb;
  --surface:    #ffffff;
  --surface2:   #eef1f8;
  --border:     #dde2f0;
  --border2:    #c8cfdf;
  --accent:     #3b6ef5;
  --accent2:    #6c47f5;
  --green:      #16a660;
  --green-bg:   #edfaf3;
  --green-bd:   #a3dfc0;
  --amber:      #d97706;
  --amber-bg:   #fffbeb;
  --amber-bd:   #fcd34d;
  --red:        #dc2626;
  --red-bg:     #fef2f2;
  --red-bd:     #fca5a5;
  --grey-bg:    #f1f3f8;
  --grey-bd:    #d1d9ec;
  --text:       #111827;
  --text2:      #4b5675;
  --text3:      #9aa3be;
  --shadow:     0 1px 4px rgba(60,80,160,0.07), 0 4px 16px rgba(60,80,160,0.06);
  --shadow2:    0 2px 12px rgba(60,80,160,0.13);
  --shadow3:    0 8px 32px rgba(60,80,160,0.16);

  /* Typography */
  --mono:       'DM Mono', monospace;
  --sans:       'DM Sans', sans-serif;
  --display:    'Syne', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-tap-highlight-color: transparent; }
body { background: var(--bg); color: var(--text); font-family: var(--sans); min-height: 100vh; overflow-x: hidden; }

/* ── KREDITS PLATFORM HEADER ── */
.k-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.k-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.k-logo-mark {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 9px; display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-size: 15px; font-weight: 800; color: #fff;
  box-shadow: 0 2px 8px rgba(59,110,245,0.3); flex-shrink: 0;
}
.k-logo-text { display: flex; flex-direction: column; line-height: 1; gap: 1px; }
.k-logo-brand { font-family: var(--mono); font-size: 10px; color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase; }
.k-logo-app   { font-family: var(--display); font-size: 17px; font-weight: 800; color: var(--text); letter-spacing: -0.03em; }

/* App switcher pill */
.k-app-switcher {
  display: flex; align-items: center;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 20px; padding: 3px; gap: 0;
  box-shadow: inset 0 1px 3px rgba(60,80,160,0.06);
}
.k-app-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 11px; border-radius: 16px; border: none;
  font-family: var(--sans); font-size: 12px; font-weight: 600;
  cursor: pointer; transition: all 0.18s; white-space: nowrap;
  color: var(--text2); background: transparent; text-decoration: none;
}
.k-app-btn.active { background: var(--surface); color: var(--text); box-shadow: 0 1px 4px rgba(60,80,160,0.12); }
.k-app-btn:hover:not(.active) { color: var(--text); }

/* User chip */
.k-user-chip {
  display: flex; align-items: center; gap: 7px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 20px; padding: 4px 12px 4px 4px;
  font-size: 12px; font-weight: 600; color: var(--text2);
  cursor: pointer; transition: all 0.15s;
}
.k-user-chip:hover { border-color: var(--accent); color: var(--accent); }
.k-user-av {
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-size: 11px; font-weight: 800; color: #fff;
  flex-shrink: 0;
}
.k-sync-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--text3); flex-shrink: 0;
}
.k-sync-dot.live { background: var(--green); }

/* ── SHARED COMPONENTS ── */

/* Cards */
.k-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 13px; padding: 18px 20px; box-shadow: var(--shadow);
}
.k-card-title {
  font-size: 14px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 7px; margin-bottom: 5px;
}
.k-card-body { font-size: 12px; color: var(--text2); line-height: 1.6; }

/* Buttons */
.k-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 15px; border-radius: 9px; border: 1.5px solid var(--border);
  font-family: var(--sans); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all 0.15s; background: var(--surface2);
  color: var(--text); text-decoration: none; white-space: nowrap;
}
.k-btn:hover { border-color: var(--accent); color: var(--accent); background: #eef3ff; }
.k-btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent; color: #fff;
  box-shadow: 0 2px 8px rgba(59,110,245,0.28);
}
.k-btn.primary:hover { opacity: 0.92; color: #fff; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(59,110,245,0.35); }
.k-btn.danger { color: var(--red); border-color: var(--red-bd); background: var(--red-bg); }
.k-btn.danger:hover { background: #fee2e2; border-color: var(--red); }
.k-btn.full { width: 100%; justify-content: center; }
.k-btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* Section labels */
.k-section-label {
  font-family: var(--mono); font-size: 10px; font-weight: 500;
  color: var(--text3); text-transform: uppercase; letter-spacing: 0.12em;
  margin: 20px 0 8px;
}

/* Inputs */
.k-input {
  width: 100%; background: var(--surface2); border: 1.5px solid var(--border);
  border-radius: 9px; padding: 11px 13px;
  font-family: var(--sans); font-size: 14px; color: var(--text);
  outline: none; transition: border-color 0.15s;
}
.k-input:focus { border-color: var(--accent); background: #fff; }
.k-input.mono { font-family: var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.k-input.pin { letter-spacing: 0.3em; font-size: 22px; text-align: center; font-family: var(--mono); }

/* Toast */
.k-toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--text); border-radius: 10px;
  padding: 9px 16px; display: flex; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 500; color: #fff; z-index: 9999;
  transition: transform 0.3s cubic-bezier(.4,0,.2,1);
  white-space: nowrap; box-shadow: 0 6px 24px rgba(0,0,0,.18);
  pointer-events: none;
}
.k-toast.show { transform: translateX(-50%) translateY(0); }
.k-toast.green { background: var(--green); }
.k-toast.red   { background: var(--red); }
.k-toast.blue  { background: var(--accent); }

/* Modal */
.k-modal-backdrop {
  position: fixed; inset: 0; background: rgba(17,24,39,.45);
  backdrop-filter: blur(4px); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.k-modal-backdrop.open { opacity: 1; pointer-events: all; }
.k-modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 18px; padding: 26px; width: 100%; max-width: 380px;
  box-shadow: var(--shadow3);
  transform: translateY(14px); transition: transform 0.2s;
  max-height: 90vh; overflow-y: auto;
}
.k-modal-backdrop.open .k-modal { transform: translateY(0); }
.k-modal-title {
  font-family: var(--display); font-size: 19px; font-weight: 800;
  letter-spacing: -0.02em; color: var(--text); margin-bottom: 6px;
}
.k-modal-sub { font-size: 13px; color: var(--text2); margin-bottom: 18px; line-height: 1.5; }
.k-modal-error { font-size: 12px; color: var(--red); min-height: 18px; margin-top: 6px; }
.k-modal-footer { display: flex; gap: 8px; margin-top: 16px; }

/* Bottom nav */
.k-bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 90;
  background: var(--surface); border-top: 1px solid var(--border);
  display: flex; box-shadow: 0 -2px 12px rgba(60,80,160,0.06);
  overflow-x: auto; overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.k-bottom-nav::-webkit-scrollbar { display: none; }
.k-nav-item {
  flex: 0 0 72px; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 5px; padding: 12px 4px;
  min-height: 64px;
  cursor: pointer; border: none; background: transparent;
  font-family: var(--sans); color: var(--text3); text-decoration: none;
  transition: color 0.15s;
}
.k-nav-item:hover { color: var(--text2); }
.k-nav-item.active { color: var(--accent); }
.k-nav-icon  { font-size: 22px; line-height: 1; }
.k-nav-label { font-size: 11px; font-weight: 600; letter-spacing: 0.04em; }

/* Animations */
@keyframes k-fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.k-fade-up { animation: k-fadeUp 0.3s ease both; }